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In both ARP and DHCPv6, the hwtype field is 16bits, and the IANA table
has allocated values >255.
(Bootp however uses 1byte so it can't represent everything)
This was discovered by fuzzing, as it causes round-trip mismatches; eg
with this packet (quoted string):
"0000\x00\x01\x00\x0e\x00\x01000000000000"
Input: 303030300001000e0001303030303030303030303030
Round-trip: 303030300001000e0001003030303030303030303030
^
The upper byte of the hwaddress is set
to 0
Signed-off-by: Anatole Denis <natolumin@unverle.fr>
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From:
r := d.GetOneOption(OptionRouter).(*OptRouter).Routers
d.UpdateOption(&OptRouter{Routers: []net.IP{net.IP{192, 168, 0, 1}}})
To:
r := GetRouter(d.Options)
d.UpdateOption(OptRouter(net.IP{192, 168, 0, 1}, ...))
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As per https://www.ietf.org/rfc/rfc3633.txt section 16, status code 6 has been reserved for "Delegating router has no prefixes available to assign to the IAPD(s)"
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