Same as 'nohostroute' option for GRE tunnels (commit 0f8b9addfc)
and IPIP tunnels (commit 46ce629fe0)
Signed-off-by: Aleksandr V. Piskunov <aleksandr.v.piskunov@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/15961
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
a47bf906cd