# =============================================================================
# climax — IPv6 apply script (ROS 7.21.4, BGP-only / no OSPFv3)
# =============================================================================
#
# Climax sits between verona (south-west) and the rest of the network
# (via core). One v6 default upstream — toward core via :12::1.
#
# P2P interfaces:
#   ether4-380-airfiber24   :12::/64  (climax .2, core .1)
#   ether6-verona-11ghz     :20::/64  (verona .1, climax .2)
#   ether3-culleoka-11ghz   :21::/64  (climax .1, culleoka .2)
#   ether5-494              :17::/64  (climax .1, 494 .2)
#
# Mgmt LAN: bridge `mgmt`, v6 = 2606:1c80:1100::1/64
# PPPoE customers: profile name `pppoe`, customer pool 2606:1c80:1101::/48 → /56
#
# BFD on wireless OSPFv2 templates was already turned off on this router
# earlier today (2026-05-09) — verified via the freshly-pulled climax.rsc.
# No BFD changes here.
# =============================================================================

# -----------------------------------------------------------------------------
# WIPE — drop OSPFv3 + stale internal v6
# -----------------------------------------------------------------------------
/ppp profile set [find] remote-ipv6-prefix-pool="" dhcpv6-pd-pool=""
/ipv6 dhcp-server remove [find]
/ipv6 dhcp-server option remove [find]
/ipv6 dhcp-client remove [find]
/ipv6 nd prefix remove [find]
/ipv6 nd remove [find default=no]
/ipv6 pool remove [find]
/ipv6 route remove [find dynamic=no]
/ipv6 firewall filter remove [find]
/ipv6 firewall mangle remove [find]
/ipv6 firewall raw remove [find]
/ipv6 address remove [find dynamic=no]

# OSPFv3 — instance, area, and the orphan culleoka-11ghz template entry
# (currently lives under area=backbone-v3) all get removed.
/routing ospf interface-template remove [find area=backbone-v3]
/routing ospf area remove [find name=backbone-v3]
/routing ospf instance remove [find name=default-v3]

# Drop any stale internal v6 iBGP peers (none present, but defensive).
/routing bgp connection remove [find name~"ibgp" and (afi~"ipv6" or address-families~"ipv6")]

# -----------------------------------------------------------------------------
# APPLY — BGP instance (climax has none today)
# -----------------------------------------------------------------------------
/routing bgp instance
add name=bgp-instance-1 as=393837 router-id=10.254.254.102

# -----------------------------------------------------------------------------
# APPLY — addresses
# -----------------------------------------------------------------------------
/ipv6 settings set forward=yes accept-router-advertisements=no

/ipv6 address
add address=2606:1c80:0:10::102/128 interface=lo                       advertise=no  comment="loopback"
add address=2606:1c80:0:12::2/64   interface=ether4-380-airfiber24    advertise=no  comment="P2P climax<->core"
add address=2606:1c80:0:20::2/64   interface=ether6-verona-11ghz      advertise=no  comment="P2P climax<->verona"
add address=2606:1c80:0:21::1/64   interface=ether3-culleoka-11ghz    advertise=no  comment="P2P climax<->culleoka"
add address=2606:1c80:0:17::1/64   interface=ether5-494               advertise=no  comment="P2P climax<->494"
add address=2606:1c80:1100::1/64    interface=mgmt                     advertise=yes comment="climax mgmt LAN"

# -----------------------------------------------------------------------------
# APPLY — static routes (replace what an IGP would have learned)
# -----------------------------------------------------------------------------
/ipv6 route
# Default upstream toward core (only one path from climax — core forwards
# upward via preseem/direct).
add dst-address=::/0                    gateway=2606:1c80:0:12::1 distance=1 comment="default via core"

# Edge loopback explicit (recursively resolved through default; explicit
# entry helps iBGP control plane converge quickly on first bring-up).
add dst-address=2606:1c80:0:10::254/128 gateway=2606:1c80:0:12::1 distance=1 comment="edge loopback via core"

# 494 sits one hop further out via the climax<->494 P2P; climax is the
# only neighbour that can deliver to its loopback. Without this, return
# traffic for 494's /128 from core/edge loops at climax.
add dst-address=2606:1c80:0:10::111/128 gateway=2606:1c80:0:17::2 distance=1 comment="494 loopback via P2P"

# verona's loopback is reachable through verona's own P2P side. Adding
# this static beats the BGP-learned next-hop during convergence and
# avoids the stale-next-hop loop we hit on 2026-05-09.
add dst-address=2606:1c80:0:10::101/128 gateway=2606:1c80:0:20::1 distance=1 comment="verona loopback via P2P"

# Blackhole climax's /44 aggregate so iBGP has the prefix to advertise.
add dst-address=2606:1c80:1100::/44 blackhole distance=200 comment="climax /44 aggregate (iBGP origin)"

# -----------------------------------------------------------------------------
# APPLY — neighbour discovery on the mgmt LAN (SLAAC + RDNSS)
# -----------------------------------------------------------------------------
/ipv6 nd
add interface=mgmt ra-interval=3m20s-10m managed-address-configuration=no other-configuration=yes advertise-dns=yes

/ipv6 nd prefix
add interface=mgmt prefix=2606:1c80:1100::/64 autonomous=yes on-link=yes

/ipv6 dhcp-server
add interface=mgmt name=climax-mgmt-stateless address-pool=static-only

/ipv6 dhcp-server option
add name=v6-dns code=23 value="'2606:4700:4700::1111''2606:4700:4700::1001'"

# -----------------------------------------------------------------------------
# APPLY — customer PD pool + bind to the climax PPPoE profile
# -----------------------------------------------------------------------------
/ipv6 pool
add name=climax-cust-pd-1 prefix=2606:1c80:1101::/48 prefix-length=56

/ppp profile
set [find name=pppoe] remote-ipv6-prefix-pool=climax-cust-pd-1 dhcpv6-pd-pool=climax-cust-pd-1

# -----------------------------------------------------------------------------
# APPLY — firewall (mirrors v4 hygiene; deny by default)
# -----------------------------------------------------------------------------
/ipv6 firewall filter
add chain=input action=accept connection-state=established,related comment="established"
add chain=input action=drop   connection-state=invalid             comment="invalid"
add chain=input action=accept protocol=icmpv6                      comment="icmpv6"
add chain=input action=accept src-address=fe80::/10                comment="link-local"
add chain=input action=accept src-address=2606:1c80::/32           comment="internal"
add chain=input action=drop                                        comment="default deny"

add chain=forward action=accept connection-state=established,related              comment="established"
add chain=forward action=drop   connection-state=invalid                          comment="invalid"
add chain=forward action=accept protocol=icmpv6 hop-limit=equal:1                 comment="PMTUD"
add chain=forward action=accept protocol=icmpv6                                   comment="icmpv6"
add chain=forward action=accept src-address=2606:1c80::/32 dst-address=2606:1c80::/32 comment="internal-to-internal"
add chain=forward action=accept in-interface-list=customer                        comment="v6 outbound from customers"
add chain=forward action=drop                                                     comment="default deny"

# -----------------------------------------------------------------------------
# APPLY — iBGP to edge (v4 transport / v6 NLRI)
# -----------------------------------------------------------------------------
# Output filter: advertise climax's own routes — /44 customer aggregate,
# loopback /128, and connected /64 P2Ps toward verona, core, culleoka, 494.
# Core (v6 RR) reflects these to every other client.
/routing filter rule
add chain=v6-ibgp-out disabled=no rule="if (dst==2606:1c80:1100::/44 || dst==2606:1c80:0:10::102/128 || (dst-len==64 && (dst==2606:1c80:0:12::/64 || dst==2606:1c80:0:17::/64 || dst==2606:1c80:0:20::/64 || dst==2606:1c80:0:21::/64))) { accept; } else { reject; }"

# Single iBGP session to CORE (which is the v6 route reflector for the fleet).
# v6 transport (loopback-to-loopback). output.redistribute=connected,static
# picks up the loopback /128 (connected) and the /44 blackhole aggregate
# (static); the filter chain narrows the set.
/routing bgp connection
add name=ibgp-rr-core instance=bgp-instance-1 templates=default \
    afi=ip,ipv6 local.role=ibgp local.address=2606:1c80:0:10::102 \
    remote.address=2606:1c80:0:10::253 remote.as=393837 multihop=yes \
    nexthop-choice=force-self output.filter-chain=v6-ibgp-out \
    output.redistribute=connected,static \
    comment="iBGP to core (v6 RR), v6 transport"

# -----------------------------------------------------------------------------
# VERIFY (paste after apply)
# -----------------------------------------------------------------------------
# /ipv6 address print
# /ipv6 route print where active
# /routing ospf neighbor print            ;; only OSPFv2 should remain
# /routing bgp instance print
# /routing bgp connection print
# /routing bgp session print
#
# After core + edge have applied:
#   /ping 2606:1c80:0:12::1 count=3      ;; core P2P side
#   /ping 2606:1c80:0:10::253 count=3    ;; core loopback
#   /ping 2606:1c80:0:10::254 count=3    ;; edge loopback
#   /ping 2606:4700:4700::1111 count=3   ;; cloudflare end-to-end
#   /routing bgp session print           ;; ibgp-edge-v6 should be Established
