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[ndp] neighsol(): optional strict validation of IPv6 Hop Limit (==255) per RFC 4861 #4829

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[ndp] neighsol(): optional strict validation of IPv6 Hop Limit (==255) per RFC 4861 #4829

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0f62e2e
ndp: add optional strict HLIM==255 validation in neighsol() per RFC 4861
itchenfei Aug 27, 2025
d1794d6
ndp: neighsol(): use '==' in BPF filter for HLIM==255
itchenfei Aug 27, 2025
ea43bb1
fix: update neighsol() to use srp and add stop_filter for HLIM valida…
itchenfei Aug 27, 2025
bdeada0
fix: enhance neighsol() to return None for empty responses and valida…
itchenfei Aug 27, 2025
6efa1bb
fix: simplify HLIM validation in neighsol() by removing ICMPv6ND_NA c…
itchenfei Aug 27, 2025
c588598
refactor: convert neighsol() from srp to sniff-based implementation
itchenfei Aug 29, 2025
5238209
fix: delete unused import srp
itchenfei Aug 29, 2025
08dd8c2
fix: correct chainCC parameter usage in neighsol() sniff implementati…
itchenfei Aug 29, 2025
ce406ff
fix: Revert to srp1 with BPF filter
itchenfei Aug 30, 2025
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2 changes: 1 addition & 1 deletion scapy/layers/inet6.py
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Original file line number Diff line number Diff line change
Expand Up @@ -140,7 +140,7 @@ def neighsol(addr, src, iface, timeout=1, chainCC=0):
p /= ICMPv6ND_NS(tgt=addr)
p /= ICMPv6NDOptSrcLLAddr(lladdr=sm)
res = srp1(p, type=ETH_P_IPV6, iface=iface, timeout=timeout, verbose=0,
chainCC=chainCC)
filter="ip6[7] == 255", chainCC=chainCC)

return res

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