UE's connectivity fails Destination Host Unreachable

[hi120ki]

Hi, thank you for the maintenance of this project. This project is so helpful for me.

I try to deploy towards5gs-helm v3.1.1 on Kubernetes deployed by kubeadm and flannel. (All of code is hosted https://github.com/hi120ki/vagrant-free5gc-k8s)

I don't modify towards5gs-helm code, and deploy single kubernetes node. A interface uesimtun0 is created in UE, but I got Host Unreachable error on UE's connectivity.

4: uesimtun0: <POINTOPOINT,PROMISC,NOTRAILERS,UP,LOWER_UP> mtu 1400 qdisc fq_codel state UNKNOWN group default qlen 500
    link/none
    inet 10.1.0.1/32 scope global uesimtun0
       valid_lft forever preferred_lft forever
    inet6 fe80::9e85:ad35:c123:a4c2/64 scope link stable-privacy
       valid_lft forever preferred_lft forever

PING 8.8.8.8 (8.8.8.8) from 10.1.0.1 uesimtun0: 56(84) bytes of data.
From 10.100.100.12 icmp_seq=1 Destination Host Unreachable
From 10.100.100.12 icmp_seq=2 Destination Host Unreachable
From 10.100.100.12 icmp_seq=3 Destination Host Unreachable

--- 8.8.8.8 ping statistics ---
4 packets transmitted, 0 received, +3 errors, 100% packet loss, time 3057ms

This shows that the UE(10.1.0.1) can reach UPF(10.100.100.12), but not the DN(8.8.8.8). I check ip route settings on UPF, but it seems to be set correctly.

default via 10.100.100.1 dev n6 table n6if
default via 192.168.0.1 dev eth0
10.1.0.0/17 dev upfgtp proto static
10.100.50.232/29 dev n3 proto kernel scope link src 10.100.50.233
10.100.50.240/29 dev n4 proto kernel scope link src 10.100.50.241
10.100.100.0/24 dev n6 proto kernel scope link src 10.100.100.12
192.168.0.0/24 dev eth0 proto kernel scope link src 192.168.0.8
192.168.0.0/16 via 192.168.0.1 dev eth0
broadcast 10.100.50.232 dev n3 table local proto kernel scope link src 10.100.50.233
local 10.100.50.233 dev n3 table local proto kernel scope host src 10.100.50.233
broadcast 10.100.50.239 dev n3 table local proto kernel scope link src 10.100.50.233
broadcast 10.100.50.240 dev n4 table local proto kernel scope link src 10.100.50.241
local 10.100.50.241 dev n4 table local proto kernel scope host src 10.100.50.241
broadcast 10.100.50.247 dev n4 table local proto kernel scope link src 10.100.50.241
broadcast 10.100.100.0 dev n6 table local proto kernel scope link src 10.100.100.12
local 10.100.100.12 dev n6 table local proto kernel scope host src 10.100.100.12
broadcast 10.100.100.255 dev n6 table local proto kernel scope link src 10.100.100.12
broadcast 127.0.0.0 dev lo table local proto kernel scope link src 127.0.0.1
local 127.0.0.0/8 dev lo table local proto kernel scope host src 127.0.0.1
local 127.0.0.1 dev lo table local proto kernel scope host src 127.0.0.1
broadcast 127.255.255.255 dev lo table local proto kernel scope link src 127.0.0.1
broadcast 192.168.0.0 dev eth0 table local proto kernel scope link src 192.168.0.8
local 192.168.0.8 dev eth0 table local proto kernel scope host src 192.168.0.8
broadcast 192.168.0.255 dev eth0 table local proto kernel scope link src 192.168.0.8
fe80::/64 dev eth0 proto kernel metric 256 pref medium
fe80::/64 dev n3 proto kernel metric 256 pref medium
fe80::/64 dev n6 proto kernel metric 256 pref medium
fe80::/64 dev n4 proto kernel metric 256 pref medium
fe80::/64 dev upfgtp proto kernel metric 256 pref medium
local ::1 dev lo table local proto kernel metric 0 pref medium
local fe80::4f:2ff:fe03:3b95 dev n6 table local proto kernel metric 0 pref medium
local fe80::40ca:95ff:fe04:d11a dev eth0 table local proto kernel metric 0 pref medium
local fe80::58a6:1b28:4ae0:c5fe dev upfgtp table local proto kernel metric 0 pref medium
local fe80::d006:8aff:fee8:91b9 dev n3 table local proto kernel metric 0 pref medium
local fe80::d08d:38ff:fe5c:51e2 dev n4 table local proto kernel metric 0 pref medium
multicast ff00::/8 dev eth0 table local proto kernel metric 256 pref medium
multicast ff00::/8 dev n3 table local proto kernel metric 256 pref medium
multicast ff00::/8 dev n6 table local proto kernel metric 256 pref medium
multicast ff00::/8 dev n4 table local proto kernel metric 256 pref medium
multicast ff00::/8 dev upfgtp table local proto kernel metric 256 pref medium

All of logs are recorded on GitHub Actions. https://github.com/hi120ki/vagrant-free5gc-k8s/runs/7720100056?check_suite_focus=true#step:3:1876

Could you give some comments of the reason for this cause? Thank you.

[github-actions[bot]]

This issue is stale because it has been open for 30 days with no activity.

[github-actions[bot]]

This issue was closed because it has been inactive for 14 days since being marked as stale.