Sepolia node is not able to find peers

My sepolia node (rpc) got stalled and it is not adding new blocks.
op-geth version: v1.101411.1
op-node version: v1.9.5

op-geth logs:

INFO [11-15|21:14:36.409] Ahead with major recommended protocol version change local=v8.0.0 required=v6.0.0-3 recommended=v6.0.0-3
INFO [11-15|21:14:44.535] Looking for peers                        peercount=1 tried=122 static=0

op-node logs:

op-node[2311671]: t=2024-11-15T21:18:17+0000 lvl=info msg="attempting connection" peer=16Uiu2HAkzLUbBeRLoGTouojEpXE3HMiJ7QJqfaVCzjXJDjrKpbLc
op-node[2311671]: t=2024-11-15T21:18:17+0000 lvl=info msg="attempting connection" peer=16Uiu2HAmPgFyxkixJ2PqVxaamSLukHdxG3pbmbtVSWjbsgHvnC2f

rollup.json:

{
  "genesis": {
    "l1": {
      "hash": "0x5fb818b4d3ba100eeb3347c508bca24752ee88f235120e108bd9ee5d1b2ae50b",
      "number": 6880819
    },
    "l2": {
      "hash": "0xe5fd5cf0be56af58ad5751b401410d6b7a09d830fa459789746a3d0dd1c79834",
      "number": 0
    },
    "l2_time": 1729003296,
    "system_config": {
      "scalar": "0x010000000000000000000000000000000000000000000000000c5fc500000558",
      "gasLimit": 30000000,
      "overhead": "0x0000000000000000000000000000000000000000000000000000000000000000",
      "batcherAddr": "0x21e57c21530bc33f12ba96c9ddc135488365002f"
    }
  },
  "block_time": 1,
  "delta_time": 0,
  "fjord_time": 0,
  "canyon_time": 0,
  "l1_chain_id": 11155111,
  "l2_chain_id": 763373,
  "ecotone_time": 0,
  "granite_time": 0,
  "regolith_time": 0,
  "channel_timeout": 300,
  "seq_window_size": 3600,
  "batch_inbox_address": "0x004de1914f4f17ac234f5a5bc8a4072a231d44bf",
  "max_sequencer_drift": 600,
  "deposit_contract_address": "0x5c1d29c6c9c8b0800692acc95d700bcb4966a1d7",
  "l1_system_config_address": "0x05c993e60179f28bf649a2bb5b00b5f4283bd525",
  "protocol_versions_address": "0x79add5713b383daa0a138d3c4780c7a1804a8090"
}

Start by reviewing the reported op-geth and op-node logs, especially peer discovery, alongside the supplied rollup.json configuration. Reproduce or inspect the Sepolia node's peer connectivity and block progression. Done means identifying the cause of the stalled peer discovery and documenting or implementing a verified resolution.