Function IsAddrCompatible

src/net_processing.cpp:1128–1131

* Whether the peer supports the address. For example, a peer that does not * implement BIP155 cannot receive Tor v3 addresses because it requires * ADDRv2 (BIP155) encoding. */

 * ADDRv2 (BIP155) encoding.
 */
static bool IsAddrCompatible(const Peer& peer, const CAddress& addr)
{
    return peer.m_wants_addrv2 || addr.IsAddrV1Compatible();
}

void PeerManagerImpl::AddAddressKnown(Peer& peer, const CAddress& addr)
{