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imds-net-sync should only work with secondary ipv4s on an interface

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This commit is contained in:
Jake Buchholz Göktürk 2023-03-24 16:41:37 -07:00
parent ed67197e7b
commit fda9a350a1
1 changed files with 5 additions and 2 deletions
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7
sbin/imds-net-sync
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@ -49,14 +49,15 @@ iface_ip6s() {
} }
imds_ip4s() { imds_ip4s() {
local ip4s=$(imds "@nic:$IFACE,@ipv4") local ip4=$(imds "@nic:$IFACE,@ipv4")
local ip4s=$(echo "$ip4" | tail +2) # secondary IPv4s
local ip4p ip4_cidr ip4_gw local ip4p ip4_cidr ip4_gw
# non-eth0 interfaces need custom route tables # non-eth0 interfaces need custom route tables
# #
if [ "$IFACE" != eth0 ] && [ -n "$ip4s" ] && if [ "$IFACE" != eth0 ] && [ -n "$ip4s" ] &&
[ -z $(ip +F -4 route show table "$RTABLE" 2>/dev/null) ]; then [ -z $(ip +F -4 route show table "$RTABLE" 2>/dev/null) ]; then
ip4p=$(echo "$ip4s" | head -1) # primary IPv4 ip4p=$(echo "$ip4" | head -1) # primary IPv4
ip4_cidr=$(imds "@nic:$IFACE,@ipv4-net") # TODO: get from iface instead? ip4_cidr=$(imds "@nic:$IFACE,@ipv4-net") # TODO: get from iface instead?
# TODO: this may not hold true for non-AWS clouds # TODO: this may not hold true for non-AWS clouds
ip4_gw=$(echo "$ip4_cidr" | cut -d/ -f1 | ip4_gw=$(echo "$ip4_cidr" | cut -d/ -f1 |
@ -68,6 +69,8 @@ imds_ip4s() {
echo "$ip4s" echo "$ip4s"
} }
# TODO: 3.18+ when we use dhcpcd for ipv4 & ipv6, we only need to do secondary IPv6s
# circle back and see how amazon-ec2-net-utils is handling everything these days
imds_ip6s() { imds_ip6s() {
local ip6s gw tries=20 local ip6s gw tries=20
ip6s=$(imds "@nic:$IFACE,@ipv6") ip6s=$(imds "@nic:$IFACE,@ipv6")