```
$ bmake
=> Bootstrap dependency digest>=20010302: found digest-20190127
===> Building for bitcoin-0.20.1nb3
Making all in src
gmake[1]: Entering directory '/home/pbulk/build/finance/bitcoin/work/bitcoin-0.20.1/src'
gmake[2]: Entering directory '/home/pbulk/build/finance/bitcoin/work/bitcoin-0.20.1/src'
gmake[3]: Entering directory '/home/pbulk/build/finance/bitcoin/work/bitcoin-0.20.1'
gmake[3]: Leaving directory '/home/pbulk/build/finance/bitcoin/work/bitcoin-0.20.1'
  CXXLD    bitcoin-tx
Undefined                       first referenced
 symbol                             in file
freeifaddrs                         libbitcoin_util.a(libbitcoin_util_a-randomenv.o)
getifaddrs                          libbitcoin_util.a(libbitcoin_util_a-randomenv.o)
ld: fatal: symbol referencing errors. No output written to .libs/bitcoin-tx
collect2: error: ld returned 1 exit status
gmake[2]: *** [Makefile:7355: bitcoin-tx] Error 1
gmake[2]: Leaving directory '/home/pbulk/build/finance/bitcoin/work/bitcoin-0.20.1/src'
gmake[1]: *** [Makefile:17263: all-recursive] Error 1
gmake[1]: Leaving directory '/home/pbulk/build/finance/bitcoin/work/bitcoin-0.20.1/src'
gmake: *** [Makefile:782: all-recursive] Error 1
*** Error code 2

Stop.
bmake[1]: stopped in /data/pkgsrc/finance/bitcoin
*** Error code 1
```

I found [this](https://github.com/pydron/ifaddr/issues/23), which seems to be the same issue, but on a Python context.

Previous issues with compiling on Illumos seem to have been sorted out (#15708 & more), but now it's stuck here.
{
    std::vector<CAddress> addresses = addrman.GetAddr(max_addresses, max_pct);
    if (m_banman) {
        addresses.erase(std::remove_if(addresses.begin(), addresses.end(),
                        [this](const CAddress& addr){return m_banman->IsDiscouraged(addr) || m_banman->IsBanned(addr);}),
                        addresses.end());
    }
    return addresses;
}
std::vector<CAddress> CConnman::GetAddresses(CNode& requestor, size_t max_addresses, size_t max_pct)
{
    auto local_socket_bytes = requestor.addrBind.GetAddrBytes();
    uint64_t cache_id = GetDeterministicRandomizer(RANDOMIZER_ID_ADDRCACHE)
        .Write(requestor.addr.GetNetwork())
        .Write(local_socket_bytes.data(), local_socket_bytes.size())
        .Finalize();
    const auto current_time = GetTime<std::chrono::microseconds>();
    auto r = m_addr_response_caches.emplace(cache_id, CachedAddrResponse{});
    CachedAddrResponse& cache_entry = r.first->second;
    if (cache_entry.m_cache_entry_expiration < current_time) { 
        cache_entry.m_addrs_response_cache = GetAddresses(max_addresses, max_pct);