def dhcpv6_callback(pkt):
global dhcpv6_server_mac
global dhcpv6_server_ipv6_link
global dhcpv6_server_duid
if pkt.haslayer(DHCP6_Reply):
if pkt[DHCP6OptServerId].duid is None:
return False
else:
dhcpv6_server_mac = pkt[Ether].src
dhcpv6_server_ipv6_link = pkt[IPv6].src
dhcpv6_server_duid = pkt[DHCP6OptServerId].duid
return True
else:
return False
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