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authorDenys Vlasenko <vda.linux@googlemail.com>2016-09-20 17:31:11 +0200
committerDenys Vlasenko <vda.linux@googlemail.com>2016-09-20 17:31:11 +0200
commit92d98f0612c147171a0e9e03dd7fdfde890ee9e5 (patch)
tree5485641aa624940230130f62cc657b9fe67b9809 /networking
parent244fdd45c798477d6ee2e221a8c2473647b402d6 (diff)
downloadbusybox-92d98f0612c147171a0e9e03dd7fdfde890ee9e5.tar.gz
ifupdown: when flushing addresses with "ip", add label %label%
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>
Diffstat (limited to 'networking')
-rw-r--r--networking/ifupdown.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/networking/ifupdown.c b/networking/ifupdown.c
index 25b04c9d7..5c24451ba 100644
--- a/networking/ifupdown.c
+++ b/networking/ifupdown.c
@@ -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); */