diff options
Diffstat (limited to 'examples/udhcp/sample.renew')
| -rwxr-xr-x | examples/udhcp/sample.renew | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/examples/udhcp/sample.renew b/examples/udhcp/sample.renew index 4dce8486a..efd98cf15 100755 --- a/examples/udhcp/sample.renew +++ b/examples/udhcp/sample.renew @@ -1,5 +1,5 @@ #!/bin/sh -# Sample udhcpc bound script +# Sample udhcpc renew script RESOLV_CONF="/etc/udhcpc/resolv.conf" @@ -18,11 +18,18 @@ then metric=0 for i in $router do + if [ "$subnet" = "255.255.255.255" ]; then + # special case for /32 subnets: + # /32 instructs kernel to always use routing for all outgoing packets + # (they can never be sent to local subnet - there is no local subnet for /32). + # Used in datacenters, avoids the need for private ip-addresses between two hops. + /sbin/ip route add $i dev $interface + fi /sbin/route add default gw $i dev $interface metric $((metric++)) done fi -# Only replace resolv.conf is we have at least one DNS server +# Only replace resolv.conf if we have at least one DNS server if [ -n "$dns" ] then echo -n > $RESOLV_CONF |