**Expected behavior**: Disabling DNS seeding (`-dnsseed=0`) should make Bitcoin Core use the fixed seed nodes immediately on startup (assuming an empty `peers.dat`).

**Actual behavior**:  The fixed seed nodes are used but only after an unnecessary 60 second timeout, and a somewhat misleading log message ("Adding fixed seed nodes as DNS doesn't seem to be available.").

**To reproduce**: `rm ~/.bitcoin/peers.dat && src/bitcoind -dnsseed=0` and wait... 💤 

This issue is probably a "good first issue" :)
{
    LOCK(cs_vNodes);
    for (CNode* pnode : vNodes) {
        if (static_cast<CService>(pnode->addr) == addr) {
            return pnode;
        }
    }
    return nullptr;
}
bool CConnman::AlreadyConnectedToAddress(const CAddress& addr)
{
    return FindNode(static_cast<CNetAddr>(addr)) || FindNode(addr.ToStringIPPort());
}
bool CConnman::CheckIncomingNonce(uint64_t nonce)
{
    LOCK(cs_vNodes);
    for (const CNode* pnode : vNodes) {
        if (!pnode->fSuccessfullyConnected && !pnode->IsInboundConn() && pnode->GetLocalNonce() == nonce)
            return false;
    }
    return true;
}
static CAddress GetBindAddress(SOCKET sock)