Need to explicitly disable ipv6 on tor @ 0.4.5.7

[Jim Newsome]

Jaym (@frochet:matrix.org) is working with tor-0.4.5.7 and found that it's trying to use ipv6 with the generated configs.

It looks like the phantom CI has "ORPort 9111 IPv4Only" in its tor configs. Maybe we need to add it here too?

[Steven Engler]

I think the IPv4Only flag was added in 0fd1a85, are they using tornettools from the main branch or only the latest release?

tornettools/tornettools/generate_tor.py

Lines 243 to 245 in eaab39a

 torrc_file.write('# for tor v0.4.4.x or earlier\n#ORPort {0}\n# for tor v0.4.5.x or later\nORPort {0} IPv4Only\n'.format(TOR_OR_PORT)) 
 torrc_file.write('DirPort {}\n'.format(TOR_DIR_PORT)) 
 torrc_file.write('SocksPort 0\n') 

[Jim Newsome]

They actually ran into it using the script in shadow-plugin-tor (shadow/shadow-plugin-tor#120), but said they'd just checked tornettools and saw it didn't generate it either. Maybe they were looking at an older version.

[Jim Newsome]

Thanks!