lnd: [bug]: The problem with processing IP & Alias from a gossip protocol?

Background

The problem with the announcement of Alias + IP addresses of LND servers after changing IP & Alias. Most of the network does not see the changes made in LND 0.15.4-beta after the server was moved to a new IP and the Alias was changed (even after a week). At the same time, most of my other nodes do not see these changes (roughly speaking, 3/4 nodes or more). There is clearly some kind of bug.

Your environment

• version of lnd 0.15.4-beta

Steps to reproduce

Change the IP and Alias and do this at least 3-4 times with different nodes. I think at least on one you will see that other nodes of the network will not see changes about him in the graph even after a week.

Expected behaviour

Changes to IP and Alias should occur fairly quickly on other nodes of the network. Otherwise, it doesn’t make sense to use Lightning.

Actual behaviour

Example - more than a week ago I moved lnd-02 to another server, the IP address was changed and I changed the Alias. At first I thought the problem was that I changed the externalip option to externalhosts for simplification (+ /etc/hosts for this). But afterwards I tried to go back to the externalip option again (with certain IP address) and restarted the lnd server many times. But it didn’t help, so I returned the externhosts option. Now I suppose it doesn’t matter which of the two options is used.

For example, lnd-02 was moved to another server now it’s lnd-25. But even after a week, even my other nodes see it as (lncli getnodeinfo):

lnd-05, lnd-26:

        "pub_key": "03d37fca0656558de4fd86bbe490a38d84a46228e7ec1361801f54f9437a18d618",
        "alias": "LNBIG.com [lnd-25/old-lnd-02]",
        "addresses": [
            {
                "network": "tcp",
                "addr": "213.174.156.69:9735"
            }
        ],

lnd-20, lnd-21, lnd-27, lnd-28, lnd-39, lnd-40 (old IP & Alias!):

        "pub_key": "03d37fca0656558de4fd86bbe490a38d84a46228e7ec1361801f54f9437a18d618",
        "alias": "LNBIG.com [lnd-02]",
        "addresses": [
            {
                "network": "tcp",
                "addr": "46.229.165.138:9735"
            }
        ],

The lnd-25 (old lnd-02) itself now is:

l getinfo
{
    "version": "0.15.4-beta commit=v0.15.4-beta",
    "commit_hash": "96fe51e2e5c2ee0c97909499e0e96a3d3755757e",
    "identity_pubkey": "03d37fca0656558de4fd86bbe490a38d84a46228e7ec1361801f54f9437a18d618",
    "alias": "LNBIG.com [lnd-25/old-lnd-02]",
    "color": "#3399ff",
    "num_pending_channels": 0,
    "num_active_channels": 84,
    "num_inactive_channels": 200,
    "num_peers": 85,
    "block_height": 765487,
    "block_hash": "0000000000000000000023bd2e094e70822bd9dccd2e63ed4ae253e810af94c3",
    "best_header_timestamp": "1669910883",
    "synced_to_chain": true,
    "synced_to_graph": true,
    "testnet": false,
    "chains": [
        {
            "chain": "bitcoin",
            "network": "mainnet"
        }
    ],
    "uris": [
        "03d37fca0656558de4fd86bbe490a38d84a46228e7ec1361801f54f9437a18d618@213.174.156.69:9735"
    ],
...