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arp - accept NUD_PERMANENT entries #2937

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Sep 19, 2024
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arp - accept NUD_PERMANENT entries #2937

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4 changes: 3 additions & 1 deletion src/waltz/ip/fd_ip.c
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Original file line number Diff line number Diff line change
Expand Up @@ -432,7 +432,9 @@ fd_ip_route_ip_addr( uchar * out_dst_mac,
fd_memcpy( out_dst_mac, arp_entry->mac_addr, 6 );

/* check the status */
if( arp_entry->state == NUD_REACHABLE ) return FD_IP_SUCCESS;
/* both NUD_REACHABLE and NUD_PERMANENT are acceptable */
uint accept_states = (uint)NUD_REACHABLE | (uint)NUD_PERMANENT;
if( FD_LIKELY( (uint)arp_entry->state & accept_states ) ) return FD_IP_SUCCESS;

/* all other statutes, try probing */
return FD_IP_PROBE_RQD;
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