appliance/router: Use lower ports for tests
appliance/router: Use lower ports for tests

This avoids conflicting with kernel-allocated high ports.

Signed-off-by: Jonathan Rudenberg <3692bfa45759a67d83aedf0045f6cb635a966abf@titanous.com>
philiplb/flynn,philiplb/flynn,flynn/flynn,benbjohnson/flynn,lmars/flynn,flynn/flynn,benbjohnson/flynn,lmars/flynn,benbjohnson/flynn,flynn/flynn,benbjohnson/flynn,benbjohnson/flynn,philiplb/flynn,flynn/flynn,lmars/flynn,lmars/flynn,philiplb/flynn,flynn/flynn,lmars/flynn,benbjohnson/flynn,philiplb/flynn