Anoncoin (ANC) is a peer-to-peer digital cryptocurrency that focuses on privacy and anonymity for its users. Created in June 2013, it is the first and only currency to have built-in support for both the I2P darknet and Tor network that conceal the IP address of the user.
I do not know about this specific issue, there is 'allot' of my design in the addrman.cpp source so we could use i2p addresses, although this topic is very stale, has the problem been fixed?