The block sync sometimes hangs and need to restart the node (Sepolia long run)

[rodrigo-o]

This was reproduced a couple of times in Sepolia, when the node is running, specially on node startup. Here are some logs, they don't show a lot but the thing is the node keeps waiting there without doing anything more, I will assume this has to do with peer discovery, but we need to check if thats the case:

INFO 17:43:40.228 [Optimistic sync] Performing optimistic sync between slots 5963489 and 5963618, for a total of 130 slots. 
INFO 17:43:40.228 [Optimistic sync] Sending request for slots 5963489 to 5963504 (request size = 16). 
INFO 17:43:40.228 [Optimistic sync] Sending request for slots 5963505 to 5963520 (request size = 16). 
INFO 17:43:40.228 [Optimistic sync] Sending request for slots 5963521 to 5963536 (request size = 16). 
INFO 17:43:40.228 [Optimistic sync] Sending request for slots 5963537 to 5963552 (request size = 16). 
INFO 17:43:40.229 [Optimistic sync] Sending request for slots 5963553 to 5963568 (request size = 16). 
INFO 17:43:40.229 [Optimistic sync] Sending request for slots 5963569 to 5963584 (request size = 16). 
INFO 17:43:40.229 [Optimistic sync] Sending request for slots 5963585 to 5963600 (request size = 16). 
INFO 17:43:40.229 [Optimistic sync] Sending request for slots 5963601 to 5963616 (request size = 16). 
INFO 17:43:40.229 [Optimistic sync] Sending request for slots 5963617 to 5963618 (request size = 2). 
INFO 17:43:40.229 [Optimistic Sync] Blocks remaining: 130