Firefox helper broken when front= is missing
0e6ced86 (legacy/trac#12778 (moved)) broke the Firefox helper when the bridge line is missing the "front" parameter, because it strips off the Host header and doesn't put it back.
0e6ced86 (legacy/trac#12778 (moved)) broke the Firefox helper when the bridge line is missing the "front" parameter, because it strips off the Host header and doesn't put it back.