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#
# rules.before
#
# Rules that should be run before the ufw command line added rules. Custom
# rules should be added to one of these chains:
#   ufw6-before-input
#   ufw6-before-output
#   ufw6-before-forward
#

# Don't delete these required lines, otherwise there will be errors
*filter
:ufw6-before-input - [0:0]
:ufw6-before-output - [0:0]
:ufw6-before-forward - [0:0]
# End required lines


# allow all on loopback
-A ufw6-before-input -i lo -j ACCEPT
-A ufw6-before-output -o lo -j ACCEPT

# drop packets with RH0 headers
-A ufw6-before-input -m rt --rt-type 0 -j DROP
-A ufw6-before-forward -m rt --rt-type 0 -j DROP
-A ufw6-before-output -m rt --rt-type 0 -j DROP

# quickly process packets for which we already have a connection
-A ufw6-before-input -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A ufw6-before-output -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A ufw6-before-forward -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT

# multicast ping replies are part of the ok icmp codes for INPUT (rfc4890,
# 4.4.1 and 4.4.2), but don't have an associated connection and are otherwise
# be marked INVALID, so allow here instead.
-A ufw6-before-input -p icmpv6 --icmpv6-type echo-reply -j ACCEPT

# drop INVALID packets (logs these in loglevel medium and higher)
-A ufw6-before-input -m conntrack --ctstate INVALID -j ufw6-logging-deny
-A ufw6-before-input -m conntrack --ctstate INVALID -j DROP

# ok icmp codes for INPUT (rfc4890, 4.4.1 and 4.4.2)
-A ufw6-before-input -p icmpv6 --icmpv6-type destination-unreachable -j ACCEPT
-A ufw6-before-input -p icmpv6 --icmpv6-type packet-too-big -j ACCEPT
# codes 0 and 1
-A ufw6-before-input -p icmpv6 --icmpv6-type time-exceeded -j ACCEPT
# codes 0-2 (echo-reply needs to be before INVALID, see above)
-A ufw6-before-input -p icmpv6 --icmpv6-type parameter-problem -j ACCEPT
-A ufw6-before-input -p icmpv6 --icmpv6-type echo-request -j ACCEPT
-A ufw6-before-input -p icmpv6 --icmpv6-type router-solicitation -m hl --hl-eq 255 -j ACCEPT
-A ufw6-before-input -p icmpv6 --icmpv6-type router-advertisement -m hl --hl-eq 255 -j ACCEPT
-A ufw6-before-input -p icmpv6 --icmpv6-type neighbor-solicitation -m hl --hl-eq 255 -j ACCEPT
-A ufw6-before-input -p icmpv6 --icmpv6-type neighbor-advertisement -m hl --hl-eq 255 -j ACCEPT
# IND solicitation
-A ufw6-before-input -p icmpv6 --icmpv6-type 141 -m hl --hl-eq 255 -j ACCEPT
# IND advertisement
-A ufw6-before-input -p icmpv6 --icmpv6-type 142 -m hl --hl-eq 255 -j ACCEPT
# MLD query
-A ufw6-before-input -p icmpv6 --icmpv6-type 130 -s fe80::/10 -j ACCEPT
# MLD report
-A ufw6-before-input -p icmpv6 --icmpv6-type 131 -s fe80::/10 -j ACCEPT
# MLD done
-A ufw6-before-input -p icmpv6 --icmpv6-type 132 -s fe80::/10 -j ACCEPT
# MLD report v2
-A ufw6-before-input -p icmpv6 --icmpv6-type 143 -s fe80::/10 -j ACCEPT
# SEND certificate path solicitation
-A ufw6-before-input -p icmpv6 --icmpv6-type 148 -m hl --hl-eq 255 -j ACCEPT
# SEND certificate path advertisement
-A ufw6-before-input -p icmpv6 --icmpv6-type 149 -m hl --hl-eq 255 -j ACCEPT
# MR advertisement
-A ufw6-before-input -p icmpv6 --icmpv6-type 151 -s fe80::/10 -m hl --hl-eq 1 -j ACCEPT
# MR solicitation
-A ufw6-before-input -p icmpv6 --icmpv6-type 152 -s fe80::/10 -m hl --hl-eq 1 -j ACCEPT
# MR termination
-A ufw6-before-input -p icmpv6 --icmpv6-type 153 -s fe80::/10 -m hl --hl-eq 1 -j ACCEPT

# ok icmp codes for OUTPUT (rfc4890, 4.4.1 and 4.4.2)
-A ufw6-before-output -p icmpv6 --icmpv6-type destination-unreachable -j ACCEPT
-A ufw6-before-output -p icmpv6 --icmpv6-type packet-too-big -j ACCEPT
# codes 0 and 1
-A ufw6-before-output -p icmpv6 --icmpv6-type time-exceeded -j ACCEPT
# codes 0-2
-A ufw6-before-output -p icmpv6 --icmpv6-type parameter-problem -j ACCEPT
-A ufw6-before-output -p icmpv6 --icmpv6-type echo-request -j ACCEPT
-A ufw6-before-output -p icmpv6 --icmpv6-type echo-reply -j ACCEPT
-A ufw6-before-output -p icmpv6 --icmpv6-type router-solicitation -m hl --hl-eq 255 -j ACCEPT
-A ufw6-before-output -p icmpv6 --icmpv6-type neighbor-advertisement -m hl --hl-eq 255 -j ACCEPT
-A ufw6-before-output -p icmpv6 --icmpv6-type neighbor-solicitation -m hl --hl-eq 255 -j ACCEPT
-A ufw6-before-output -p icmpv6 --icmpv6-type router-advertisement -m hl --hl-eq 255 -j ACCEPT
# IND solicitation
-A ufw6-before-output -p icmpv6 --icmpv6-type 141 -m hl --hl-eq 255 -j ACCEPT
# IND advertisement
-A ufw6-before-output -p icmpv6 --icmpv6-type 142 -m hl --hl-eq 255 -j ACCEPT
# MLD query
-A ufw6-before-output -p icmpv6 --icmpv6-type 130 -s fe80::/10 -j ACCEPT
# MLD report
-A ufw6-before-output -p icmpv6 --icmpv6-type 131 -s fe80::/10 -j ACCEPT
# MLD done
-A ufw6-before-output -p icmpv6 --icmpv6-type 132 -s fe80::/10 -j ACCEPT
# MLD report v2
-A ufw6-before-output -p icmpv6 --icmpv6-type 143 -s fe80::/10 -j ACCEPT
# SEND certificate path solicitation
-A ufw6-before-output -p icmpv6 --icmpv6-type 148 -m hl --hl-eq 255 -j ACCEPT
# SEND certificate path advertisement
-A ufw6-before-output -p icmpv6 --icmpv6-type 149 -m hl --hl-eq 255 -j ACCEPT
# MR advertisement
-A ufw6-before-output -p icmpv6 --icmpv6-type 151 -s fe80::/10 -m hl --hl-eq 1 -j ACCEPT
# MR solicitation
-A ufw6-before-output -p icmpv6 --icmpv6-type 152 -s fe80::/10 -m hl --hl-eq 1 -j ACCEPT
# MR termination
-A ufw6-before-output -p icmpv6 --icmpv6-type 153 -s fe80::/10 -m hl --hl-eq 1 -j ACCEPT

# ok icmp codes for FORWARD (rfc4890, 4.3.1)
-A ufw6-before-forward -p icmpv6 --icmpv6-type destination-unreachable -j ACCEPT
-A ufw6-before-forward -p icmpv6 --icmpv6-type packet-too-big -j ACCEPT
# codes 0 and 1
-A ufw6-before-forward -p icmpv6 --icmpv6-type time-exceeded -j ACCEPT
# codes 0-2
-A ufw6-before-forward -p icmpv6 --icmpv6-type parameter-problem -j ACCEPT
-A ufw6-before-forward -p icmpv6 --icmpv6-type echo-request -j ACCEPT
-A ufw6-before-forward -p icmpv6 --icmpv6-type echo-reply -j ACCEPT
# ok icmp codes for FORWARD (rfc4890, 4.3.2)
# Home Agent Address Discovery Reques
-A ufw6-before-input -p icmpv6 --icmpv6-type 144 -j ACCEPT
# Home Agent Address Discovery Reply
-A ufw6-before-input -p icmpv6 --icmpv6-type 145 -j ACCEPT
# Mobile Prefix Solicitation
-A ufw6-before-input -p icmpv6 --icmpv6-type 146 -j ACCEPT
# Mobile Prefix Advertisement
-A ufw6-before-input -p icmpv6 --icmpv6-type 147 -j ACCEPT

# allow dhcp client to work
-A ufw6-before-input -p udp -s fe80::/10 --sport 547 -d fe80::/10 --dport 546 -j ACCEPT

# allow MULTICAST mDNS for service discovery
-A ufw6-before-input -p udp -d ff02::fb --dport 5353 -j ACCEPT

# allow MULTICAST UPnP for service discovery
-A ufw6-before-input -p udp -d ff02::f --dport 1900 -j ACCEPT

# don't delete the 'COMMIT' line or these rules won't be processed
COMMIT