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yazun's avatar
yazun
Aspirant
Sep 16, 2021

NAT loopback _not working_ on SXS80 Satellite.

Hello,

Contrary to some information from this forum we cannot get loopback NAT working on SXS80. 

It does work while connected to the main router (SXR80) but it is ridiculous one has to be connected to a speific point of the mesh system to get such basic functionality working.

 

Has anynody has any hints how to enable this for the sattelite?

We can get it working for few seconds by changing kernel params, but the satellite reboots then after few seconds as a security measure (sic!).

 

Hope soembody can help, support has ignored the question so far.

 

on satellite:
cat /proc/sys/net/bridge/bridge-nf-call-iptables
1
root@SXS80:~# sysctl -p
kernel.panic = 3
net.ipv4.conf.default.arp_ignore = 1
net.ipv4.conf.all.arp_ignore = 1
net.ipv4.ip_forward = 1
net.ipv4.ip_option_rr_ssrr_lsrr_pass_through = 1
net.ipv4.ipfrag_overlap_drop = 1
net.ipv4.icmp_echo_ignore_broadcasts = 1
net.ipv4.icmp_ignore_bogus_error_responses = 1
net.ipv4.igmp_max_memberships = 100
net.ipv4.tcp_ecn = 0
net.ipv4.tcp_fin_timeout = 30
net.ipv4.tcp_keepalive_time = 120
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_timestamps = 1
net.ipv4.tcp_sack = 1
net.ipv4.tcp_dsack = 1
net.dni.dod_skip_control_packet = 1
net.ipv6.conf.default.forwarding = 1
net.ipv6.conf.all.forwarding = 1
net.netfilter.nf_conntrack_acct = 1
net.netfilter.nf_conntrack_checksum = 0
net.netfilter.nf_conntrack_max = 65536
net.netfilter.nf_conntrack_tcp_timeout_established = 7440
net.netfilter.nf_conntrack_tcp_timeout_syn_sent = 60
net.netfilter.nf_conntrack_tcp_timeout_time_wait = 60
net.netfilter.nf_conntrack_udp_timeout = 300
net.netfilter.nf_conntrack_udp_timeout_stream = 300
net.netfilter.nf_conntrack_icmp_timeout = 60
net.bridge.bridge-nf-call-arptables = 0
net.bridge.bridge-nf-call-ip6tables = 0
net.bridge.bridge-nf-call-iptables = 0
vm.min_free_kbytes = 12288

---
config set reset_satelliteconfigs_forced=0
config commit
# NAT loopback works for few seconds then reboots after 
echo 0 > /proc/sys/net/bridge/bridge-nf-call-iptables

would appreciate any hints.

 think it's not serious to have such a problem with any hardware at this price point.

 

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