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ubuntu 系统配置网卡,直接networking restart失败。使用ifup interface 才生效

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发表于 2022-1-12 11:27:15 | 显示全部楼层 |阅读模式

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root@controller:~# vim /etc/network/interfaces  B! h: D+ Q$ y7 d& C
interfaces    interfaces.d/
; m' e7 G$ x8 V' c/ jroot@controller:~# vim /etc/network/interfaces
+ _4 v2 d, r# z5 V( H! \root@controller:~# service networking restart
: y2 j/ \9 ?3 c% Lstop: Job failed while stopping0 Y8 F- {) J/ U2 Y* E  p7 ^2 ~; d
start: Job is already running: networking3 Z2 B) s/ \. `: N/ ^! w  |7 q
root@controller:~# ip addr
. W* b: G* E  Z) D! p9 c# K7 @1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
% `; |- b8 D' U7 R- w- }    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00) O( \9 H# P6 m% k, @0 j
    inet 127.0.0.1/8 scope host lo: _# q8 W2 b! _& \5 ^
       valid_lft forever preferred_lft forever# |' g4 N; I* c4 @. n; R
    inet6 ::1/128 scope host
5 W- k8 U7 O6 K       valid_lft forever preferred_lft forever! i7 i5 ]9 x; p# G
2: eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
4 ~0 A- ]. u1 m' _7 M' u    link/ether 00:0c:29:8c:59:8c brd ff:ff:ff:ff:ff:ff6 x" x) @$ C) f$ j: v, ^! S
3: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
/ j9 b4 o& O) k    link/ether 00:0c:29:8c:59:96 brd ff:ff:ff:ff:ff:ff
5 ~( W. K9 k& e' I0 D4: eth2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
/ E8 A4 O5 J+ n. P' n    link/ether 00:0c:29:8c:59:a0 brd ff:ff:ff:ff:ff:ff
$ H/ R# D2 V" @8 k% b+ T4 P5: eth3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000. a/ `! E7 y% ~9 ?& W# N, ?* |0 o
    link/ether 00:0c:29:8c:59:aa brd ff:ff:ff:ff:ff:ff
# w+ w; k  h3 l2 u" n    inet 192.168.13.3/24 brd 192.168.13.255 scope global eth3
: Z( h% T- U- n9 c       valid_lft forever preferred_lft forever
% b: @3 v5 X5 R" Y4 J2 o    inet6 fe80::20c:29ff:fe8c:59aa/64 scope link ! k9 O' i* k7 l( W
       valid_lft forever preferred_lft forever5 W; y7 v5 Q+ p: X3 J3 }+ \3 a
root@controller:~# /etc/init
) h: _9 w- i5 O& q. c( N% Ninit/            init.d/          initramfs-tools/ ( v6 m! z$ u) y0 r. C
root@controller:~# /etc/init.d/networking restart
, U+ \1 h/ I3 y* H: I- G5 D4 p( r: jroot@controller:~# ip addr
8 J3 [; ~$ O2 N8 }" z' X6 N1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
; g$ h/ ], C$ R! G' N. M/ L/ b    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
; S2 R4 ~! S' A% e* Q  t    inet 127.0.0.1/8 scope host lo
( S) `4 `4 e) Z) @       valid_lft forever preferred_lft forever- N0 l& o/ R) a! m2 Z- |2 q4 c1 z
    inet6 ::1/128 scope host : v, t( d1 w! m" T( M
       valid_lft forever preferred_lft forever5 Y! k& A4 x# o( M* `% t
2: eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000$ e' t5 |& z& s- r# u
    link/ether 00:0c:29:8c:59:8c brd ff:ff:ff:ff:ff:ff
! \; G5 ~5 ]+ d8 j( R7 x3: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000- ~$ K% _) n! l4 |. r( d# t/ ^2 _
    link/ether 00:0c:29:8c:59:96 brd ff:ff:ff:ff:ff:ff
! I  }# {' i3 ~! ]' F7 }* ^: X4: eth2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
0 l* X7 Q, U' O: f+ R9 f    link/ether 00:0c:29:8c:59:a0 brd ff:ff:ff:ff:ff:ff
' a' q9 t3 Q2 a, y+ }5: eth3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000) k# a5 n3 n6 _. J7 \, }
    link/ether 00:0c:29:8c:59:aa brd ff:ff:ff:ff:ff:ff8 X! _+ ~/ Y) r" @( I( E
    inet 192.168.13.3/24 brd 192.168.13.255 scope global eth3
1 t! O1 E' v2 d# B: l       valid_lft forever preferred_lft forever
% T% ]) a" ?4 v- l( o! t" v    inet6 fe80::20c:29ff:fe8c:59aa/64 scope link 5 H3 ^4 O$ S7 P0 k; f
       valid_lft forever preferred_lft forever
+ _* V# n3 y/ h: Q& y: \7 z+ Hroot@controller:~# ifup eth0
7 ]0 @6 a1 ^% |Internet Systems Consortium DHCP Client 4.2.4
' P4 b3 Y, Y2 h! cCopyright 2004-2012 Internet Systems Consortium.
! i9 A9 ^, U5 _  b2 PAll rights reserved.
& h1 O( `1 g0 R' M8 \8 Z8 F7 ]For info, please visit https://www.isc.org/software/dhcp/, L6 X! u- a% {- Z; a
Listening on LPF/eth0/00:0c:29:8c:59:8c
& a/ q5 _, a* {( ?Sending on   LPF/eth0/00:0c:29:8c:59:8c+ k4 L/ w; {( [
Sending on   Socket/fallback& H& ^1 g8 x4 ?8 Z3 u2 x8 e) a
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3 (xid=0xeb67d11f)+ e" D# A2 E( E" `( I
. C/ e+ l* k% |6 ^& m; s
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3 (xid=0xeb67d11f)
/ {) M( C9 Z$ z7 V
7 }) F) k, j* I& M/ z8 s' e& k! T1 i$ _8 c/ q
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8 (xid=0xeb67d11f)5 U8 F% P; q3 d9 f! k: I
$ K. ~: x/ O( J4 `2 k  }- b! c6 A

6 j0 h) [3 f* troot@controller:~# ip addr  D0 w! g# b8 N3 g3 z# d
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default ; x( Y/ [  ~+ O6 I" t8 e/ I
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:001 r: Z$ E; P1 F) F% n
    inet 127.0.0.1/8 scope host lo' t3 r. U7 ?! R, R
       valid_lft forever preferred_lft forever, I# Y, B# L. s8 }  `
    inet6 ::1/128 scope host 7 x! e# D  Y: _8 I! Q
       valid_lft forever preferred_lft forever
  A2 `) H! m6 H; ]+ T  A+ Q6 t2 w2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
! u* U* b; S8 S: ?+ f' y    link/ether 00:0c:29:8c:59:8c brd ff:ff:ff:ff:ff:ff0 I+ w: s5 e3 q1 N9 ?+ S6 {
    inet6 fe80::20c:29ff:fe8c:598c/64 scope link
0 o' w. K  L7 b3 `4 ]) m       valid_lft forever preferred_lft forever( b9 b9 b/ P  O4 v2 Q4 V* [
3: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
9 I. D. j5 r+ {' x3 W    link/ether 00:0c:29:8c:59:96 brd ff:ff:ff:ff:ff:ff
) O; C; d. s# `. g2 q4: eth2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000' P& V7 X) z1 \0 Z8 o
    link/ether 00:0c:29:8c:59:a0 brd ff:ff:ff:ff:ff:ff, C* l8 K7 `8 p1 P0 z/ q
5: eth3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000" Z( e5 R# u$ g
    link/ether 00:0c:29:8c:59:aa brd ff:ff:ff:ff:ff:ff( c+ s: N; Y& e5 q2 K
    inet 192.168.13.3/24 brd 192.168.13.255 scope global eth3
* C( @; T: F0 q& M( \       valid_lft forever preferred_lft forever# |( c/ E2 k2 V4 g7 M: N4 \
    inet6 fe80::20c:29ff:fe8c:59aa/64 scope link
5 j- p2 n2 m6 J1 x5 e; ~  N       valid_lft forever preferred_lft forever& o9 p, M7 n1 ^
root@controller:~# ifup eth1. b( m% B' s; Z; a5 @* m$ o5 X
Internet Systems Consortium DHCP Client 4.2.4! t* N6 M* }; }0 ]0 p+ F
Copyright 2004-2012 Internet Systems Consortium.
7 d. h3 X8 _% l0 v9 WAll rights reserved.
) E# r+ \  z6 T6 G+ fFor info, please visit https://www.isc.org/software/dhcp/
3 Q; I) b9 N% Y# F0 A) s3 V- fListening on LPF/eth1/00:0c:29:8c:59:964 V6 @" F4 q6 y1 n; M
Sending on   LPF/eth1/00:0c:29:8c:59:96
- ?  [2 M- I# VSending on   Socket/fallback0 H* h8 _# `: ], e( I1 r
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 3 (xid=0x21870d6a)
+ ?# W* A7 u! w  b3 w6 k  E0 WDHCPREQUEST of 171.10.91.128 on eth1 to 255.255.255.255 port 67 (xid=0x6a0d8721)
7 `. u( F: u( X) C" m$ ], T7 fDHCPOFFER of 171.10.91.128 from 171.10.91.254+ U& r; l  y  E0 P
DHCPACK of 171.10.91.128 from 171.10.91.2542 u/ J; H5 |, |9 `* w& P
bound to 171.10.91.128 -- renewal in 899 seconds.* ]& X" b9 X# E2 [7 z
root@controller:~#
# D3 R5 H8 h& c* u; v! L4 \root@controller:~#
8 P$ }0 g% ], p' F8 D2 troot@controller:~# 2 }5 J- d1 c# m  r
root@controller:~# ifup eth0# A- `: V4 Q& K6 t
ifup: interface eth0 already configured: y) a1 S1 w. {# k5 k/ O5 j
root@controller:~# ifup eth2; t9 \+ d/ b# I2 V8 X# o
Internet Systems Consortium DHCP Client 4.2.4, h4 `* C5 |5 e3 m5 I  R
Copyright 2004-2012 Internet Systems Consortium.1 }5 h. w, i" v; {
All rights reserved.% L+ l3 k3 a4 h( n1 o
For info, please visit https://www.isc.org/software/dhcp/
; _2 G6 B' y9 g8 X" Y+ [& W0 uListening on LPF/eth2/00:0c:29:8c:59:a0
: k. b) G* g+ u1 ?+ {) uSending on   LPF/eth2/00:0c:29:8c:59:a0, d7 R5 j; P8 t: B- a: F. k# m' |/ B
Sending on   Socket/fallback
/ @# S! b6 w: ~) s! qDHCPDISCOVER on eth2 to 255.255.255.255 port 67 interval 3 (xid=0x685a54b)" y% m* Y1 ?0 G8 Z, z! ~3 \
DHCPREQUEST of 162.96.90.128 on eth2 to 255.255.255.255 port 67 (xid=0x4ba58506)0 X6 V/ z7 @3 j, E$ J- m
DHCPOFFER of 162.96.90.128 from 162.96.90.254
* @. @) x8 L% o5 j4 _DHCPACK of 162.96.90.128 from 162.96.90.2544 x  D, [, N0 l' Z# ~! m6 h
bound to 162.96.90.128 -- renewal in 823 seconds.
6 @' }* g/ Z/ n3 }( R2 T8 Aroot@controller:~# ip addr4 n, J! d+ z3 J4 N+ C
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default 9 z; H# E1 d$ b& t9 R9 U
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
8 C( g* Q8 A- d) Q    inet 127.0.0.1/8 scope host lo
' x. d0 S  E, a- S1 O; J1 d       valid_lft forever preferred_lft forever
4 b& h% k1 o* |) g5 N+ C) G3 [    inet6 ::1/128 scope host * T1 f  |+ a1 b: A
       valid_lft forever preferred_lft forever
, x! d8 V! B0 V6 p1 m/ q) y9 K% m2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000, t( U, J* p* r" q' }
    link/ether 00:0c:29:8c:59:8c brd ff:ff:ff:ff:ff:ff; o8 O6 T9 V0 q" Z7 ~+ e
    inet6 fe80::20c:29ff:fe8c:598c/64 scope link $ W) }: b1 O, i& G
       valid_lft forever preferred_lft forever% N5 t' Y- f. a( ~
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000: l  o, g9 `- Z7 ]8 i4 d
    link/ether 00:0c:29:8c:59:96 brd ff:ff:ff:ff:ff:ff
' b. d! O9 @: }' n    inet 171.10.91.128/24 brd 171.10.91.255 scope global eth16 U1 n* @& r5 G) t& ~1 p& ~
       valid_lft forever preferred_lft forever
) a  V3 t8 W4 }7 R' z    inet6 fe80::20c:29ff:fe8c:5996/64 scope link
5 B3 d& v5 n* l+ l       valid_lft forever preferred_lft forever) [- n$ _6 y: ]- }% t& h
4: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
- S9 T6 ^: N: |0 o    link/ether 00:0c:29:8c:59:a0 brd ff:ff:ff:ff:ff:ff
( E% {2 S0 ^9 o( v# Z: _0 |- g    inet 162.96.90.128/24 brd 162.96.90.255 scope global eth2
) D5 e: u1 {) p/ u$ }& f       valid_lft forever preferred_lft forever# ^2 o7 ~* b; C; P  m& _  E# [
    inet6 fe80::20c:29ff:fe8c:59a0/64 scope link 2 H  W5 f# r1 f" _
       valid_lft forever preferred_lft forever! e0 `' ^# }+ O/ \4 f, L
5: eth3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 10008 X* \3 b8 c1 F3 m: l) F* Y, J
    link/ether 00:0c:29:8c:59:aa brd ff:ff:ff:ff:ff:ff! }3 `7 I$ t, N, h
    inet 192.168.13.3/24 brd 192.168.13.255 scope global eth3* E( _& Y7 u% O3 l0 A( O
       valid_lft forever preferred_lft forever/ O$ q: y# a- {6 O/ c; q1 O
    inet6 fe80::20c:29ff:fe8c:59aa/64 scope link : Y; j0 L) I! A, [7 O
       valid_lft forever preferred_lft forever0 M* z8 l- w2 |
root@controller:~# reboot
1 p: u, A6 V: r. x$ Y2 aroot@controller:~# 1 }& e0 l1 i4 M
Broadcast message from root@controller
! r: O8 D; q. [) ~0 q/ O4 D. ` (/dev/pts/0) at 11:25 ..., i2 L/ w6 Z, V6 \. A  \% e$ Z
The system is going down for reboot NOW!
5 Y( z/ z, q8 w& w5 {( D$ P  V4 c" l+ G
 楼主| 发表于 2022-1-12 11:28:47 | 显示全部楼层
Ubuntu14.04修改配置,重启网卡没有生效,出现如下问题:, }: R; Z# p+ Y9 t
% F: s' X5 Q3 Z0 H* Y
# cat /etc/issue
# W' ~. [- Y; j- PUbuntu 14.04 LTS \n \l3 U* j5 Z& Q/ K1 D" h  ~4 X* g6 B8 a
# service  networking restart
' k/ Q5 x; K' o2 f5 U! f8 q) p- c. k/ @: hstop: Job failed while stopping) M" i" A8 J0 `' X/ I* o. Q" K
start: Job is already running: networking% e, s) b! r: S7 x
# tail -f /var/log/upstart/networking.log
: d* x. u1 U7 @6 R# v% r" n7 zStopping or restarting the networking job is not supported.
2 U5 w4 B: p6 F+ i6 TUse ifdown & ifup to reconfigure desired interface.& d$ k. w4 U" M; l. F
从以上日志内容可以看出,传统的service重启和停止网络已经不再支持了,需要通过使用ifdown & ifup来实现相应的操作。
8 A- Y1 P, u! `) m/ d4 j; ]  C2 g3 {& D
重启指定网卡7 s+ F. c/ E5 O% f: n) f
# ifdown eth0 && ifup eth0
/ X; h% e+ l: k: [9 ]重启除lo网卡的所有网卡
2 W: d2 @' O3 x1 i0 _( {+ P) G# ifdown --exclude=lo -a && sudo ifup --exclude=lo -a
$ T! C' L% _; y! ~& Q9 E配置桥接2 M' F3 D% D4 Y
# apt-get install bridge-utils
9 j7 ^# i0 z$ P5 W; d' M# cat /etc/network/interfaces! ?; B7 j0 g3 J5 a; k
auto lo% F0 i9 _& V" _' H
iface lo inet loopback+ Z- ^2 e! b1 D, G, _

% ^$ S: J" @) S7 w- k' A3 @( G, P8 uauto eth0
9 |( v  c' u$ Y9 G$ `# ^# ^iface eth0 inet manual
6 f/ o; s6 C3 k# v2 y9 Z" ^: H; ~0 r4 o
auto br0
) O- N0 [. u- F8 z3 E( miface br0 inet static
/ n. j" M9 v' ~  z# caddress 192.168.0.10
6 o' N" a! J# k7 x4 enetmask 255.255.255.04 S  E) \7 R  E  H, i- N
gateway 192.168.0.1
3 E* ^+ E2 Z, f9 j* H- }bridge_ports eth0
# U7 T* v& ^" E' e& bbridge_stp off
: I# `3 O5 e+ A. q4 ]4 jbridge_fd 0
' H/ v1 `+ \) p% U6 u" v' J3 fbridge_maxwait 0
0 `! B% D! a+ N! y- t4 b/ Gdns-nameservers 192.168.0.1! n' W  F1 C- @. x7 b9 ^
# ifup br0
6 T* D' m/ C6 b2 F2 H: Y* [# brctl  show
) C4 _. k+ ?: ?8 _! wbridge name   bridge id       STP enabled interfaces
* {# M) Q" G: c) t) }+ U6 @7 K3 Gbr0       8000.02000a0080e1   no      eth0
 楼主| 发表于 2022-1-12 11:32:22 | 显示全部楼层
root@controller:~# vim /etc/network/interfaces1 j8 K. \% G+ M' b1 v
auto eth3
' T- H$ q4 g9 S5 {0 x4 ziface eth3 inet static
5 z7 M7 J% Q/ v5 E5 i, u$ yaddress 192.168.13.155; |; k: y% x. ~4 E( O
netmask 255.255.255.0
. P! @6 \8 `5 {7 Z. D! [9 N8 Egateway 192.168.13.2: O( S) v: f. Y$ @
dns-nameservers 114.114.114.114
" Q: D( ?; R" h6 m- P0 `  x. h. X+ T* i) \
保存退出,重新启动网卡:
& J% ~6 K  J- `ifdown eth3 && ifup eth3 &
 楼主| 发表于 2022-1-12 11:44:03 | 显示全部楼层
root@controller:~# vim /etc/network/interfaces
# G" E1 x  p6 e1 Y" iroot@controller:~# ifdown eth1 eth2
/ N- \& X4 ?) b/ C% {root@controller:~# ip addr4 l$ k; O9 ]3 F, P/ N3 o
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
4 }* l. {8 Y% I# ?    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
- n; }; p4 `) \& z9 C    inet 127.0.0.1/8 scope host lo
# Z6 R+ G- o" {       valid_lft forever preferred_lft forever
, b! I3 ^5 y$ X0 _" ?! b0 ?    inet6 ::1/128 scope host
- ]; o9 e' k* Q  L6 v& W  F1 B       valid_lft forever preferred_lft forever
2 H! p# o" |" {; c4 k/ V2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
, i! n: S/ N' N' `# H    link/ether 00:0c:29:8c:59:8c brd ff:ff:ff:ff:ff:ff
( [" l  H1 e/ ^0 W4 }( U' y    inet6 fe80::20c:29ff:fe8c:598c/64 scope link 2 X& K) R5 J+ Y
       valid_lft forever preferred_lft forever9 L1 l8 |- X8 A( \! H1 x
3: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000
0 u. L/ e2 r5 O% P0 A1 P    link/ether 00:0c:29:8c:59:96 brd ff:ff:ff:ff:ff:ff
+ A6 R$ _0 f0 M8 _" t4 G8 W4: eth2: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN group default qlen 10008 {( p8 B- n( R& a- \' d2 M
    link/ether 00:0c:29:8c:59:a0 brd ff:ff:ff:ff:ff:ff8 x2 G. u2 }4 b% J* T3 k9 y
5: eth3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
% w9 n9 \- T2 e' @+ W$ N' a% z    link/ether 00:0c:29:8c:59:aa brd ff:ff:ff:ff:ff:ff
, T' W6 J. r' v1 k% F    inet 192.168.13.155/24 brd 192.168.13.255 scope global eth3. x9 O, e  Z/ M7 H3 `+ @
       valid_lft forever preferred_lft forever
. b8 w  X3 d4 q7 `5 P+ \    inet6 fe80::20c:29ff:fe8c:59aa/64 scope link
5 T* ~2 i; X# i. \( m8 t       valid_lft forever preferred_lft forever
. s3 [' I/ A. I* k+ |$ E* sroot@controller:~# ifup  eth1 eth2
2 d) ?$ ]( H- Y' P( wError: an inet prefix is expected rather than "171.10.91.128/255.255.225.0".
' v  y: ^/ y) ]5 S. ?$ U, uFailed to bring up eth1.8 x- ~0 y# j$ x' }* D6 j, q
Error: an inet prefix is expected rather than "162.96.90.155/255.255.225.0".- E% N. r5 ?0 e
Failed to bring up eth2./ Z" I/ Y6 M+ ?( I& z( E/ l2 C
$ j3 J& E/ ^( ?
root@controller:~# ifdown  eth1 eth22 f4 A0 ?: E8 n2 d$ ]
root@controller:~# ifup  eth1 eth2
( H' M- s3 c! k$ l# x) z% k. Iroot@controller:~# : M( S8 q; @- u8 [+ d2 z8 d$ o3 S0 F

  v! p2 z2 \" `2 D- k- g
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