Comment 0 for bug 1503686

Currently enable_snat is allowed only when setting a gateway.

$ neutron router-gateway-set <router-name> <ext-network> --disable-net
$ neutron router-gateway-set <router-name> <ext-network> --enable-net

There should be provision to set this flag with update command too.
Like
$ neutron router-update --enable-snat
$ neutron router-update --disable-snat