v0.5.59

• dns.lookup answers an IP literal with itself in its own family, as Node does: :: stayed IPv4 0.0.0.0, so listen({ host: '::', ipv6Only: true }) bound IPv4 and collided with the IPv4 listener on the same port (measured in the tab with NODE_DEBUG=net: setupListenHandle 0.0.0.0 … 4).