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ifupdown: when flushing addresses with "ip", add label %label%

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User report:

or our board we setup eth0:0 on a 10.10.10.x/29 netwrok.

The problem is ip addr flush dev eth0:0 removes all ip addresses from
eth0.  You can see this if you run
ip -stat -stat addr flush dev eth0:0

2: eth0    inet 172.27.105.10/22 brd 172.27.107.255 scope global eth0
       valid_lft forever preferred_lft forever
2: eth0    inet 10.10.10.9/29 scope global eth0:0
       valid_lft forever preferred_lft forever
2: eth0    inet6 fe80::a2f6:fdff:fe18:2b13/64 scope link
       valid_lft forever preferred_lft forever

*** Round 1, deleting 3 addresses ***
*** Flush is complete after 1 round ***

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2016-09-20 17:31:11 +02:00
parent 244fdd45c7
commit 92d98f0612
1 changed files with 5 additions and 2 deletions
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7
networking/ifupdown.c
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@ -492,7 +492,7 @@ static int FAST_FUNC static_up(struct interface_defn_t *ifd, execfn *exec)
result = execute("ifconfig %iface%[[ hw %hwaddress%]][[ media %media%]][[ mtu %mtu%]] up",
ifd, exec);
result += execute("ifconfig %iface% %address% netmask %netmask%"
"[[ broadcast %broadcast%]][[ pointopoint %pointopoint%]] ",
"[[ broadcast %broadcast%]][[ pointopoint %pointopoint%]]",
ifd, exec);
result += execute("[[route add default gw %gateway%[[ metric %metric%]] %iface%]]", ifd, exec);
return ((result == 3) ? 3 : 0);
@ -503,7 +503,10 @@ static int FAST_FUNC static_down(struct interface_defn_t *ifd, execfn *exec)
{
int result;
# if ENABLE_FEATURE_IFUPDOWN_IP
result = execute("ip addr flush dev %iface%", ifd, exec);
/* Optional "label LBL" is necessary if interface is an alias (eth0:0),
* otherwise "ip addr flush dev eth0:0" flushes all addresses on eth0.
*/
result = execute("ip addr flush dev %iface%[[ label %label%]]", ifd, exec);
result += execute("ip link set %iface% down", ifd, exec);
# else
/* result = execute("[[route del default gw %gateway% %iface%]]", ifd, exec); */