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1
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#
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2
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# ns1 <-> nsr1 <-> nsr2 <-> ns2
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3
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#
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4
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ip netns add ns1
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5
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ip netns add nsr1
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6
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ip netns add nsr2
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7
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ip netns add ns2
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8
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9
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ip link add veth0 netns nsr1 type veth peer name veth0 netns ns1
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10
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ip link add veth1 netns nsr1 type veth peer name veth1 netns nsr2
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11
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ip link add veth0 netns nsr2 type veth peer name veth0 netns ns2
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12
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13
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ip -net nsr1 addr add 10.141.10.1/24 dev veth0
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14
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ip -net nsr1 addr add a010::1/64 dev veth0
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15
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ip -net nsr1 addr add b010::10/64 dev veth1
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16
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ip -net nsr1 link set up dev veth0
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17
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ip -net nsr1 link set up dev veth1
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18
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#ip -net nsr1 link add name gtp0 type gtp role sgsn local ::0
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19
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ip netns exec nsr1 ./gtp-link add gtp0 ip6 --sgsn &
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20
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sleep 2
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21
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ip -net nsr1 link set up dev gtp0
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22
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ip -net nsr1 ro add 10.141.11.0/24 dev gtp0
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23
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24
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ip -net nsr2 addr add 10.141.11.1/24 dev veth0
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25
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ip -net nsr2 addr add a011::1/64 dev veth0
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26
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ip -net nsr2 addr add b010::11/64 dev veth1
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27
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ip -net nsr2 link set up dev veth0
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28
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ip -net nsr2 link set up dev veth1
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29
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#ip -net nsr2 link add name gtp0 type gtp role ggsn local ::0
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30
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ip netns exec nsr2 ./gtp-link add gtp0 ip6 &
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31
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sleep 2
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32
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ip -net nsr2 link set up dev gtp0
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33
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ip -net nsr2 ro add 10.141.10.0/24 dev gtp0
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34
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35
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ip netns exec nsr1 sysctl net.ipv4.ip_forward=1 > /dev/null
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36
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ip netns exec nsr2 sysctl net.ipv4.ip_forward=1 > /dev/null
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37
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ip netns exec nsr1 sysctl net.ipv6.conf.all.forwarding=1 > /dev/null
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38
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ip netns exec nsr2 sysctl net.ipv6.conf.all.forwarding=1 > /dev/null
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39
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40
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ip -net ns1 addr add 10.141.10.2/24 dev veth0
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41
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ip -net ns1 link set up dev veth0
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42
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ip -net ns1 ro add default via 10.141.10.1
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43
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44
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ip -net ns2 addr add 10.141.11.2/24 dev veth0
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45
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ip -net ns2 link set up dev veth0
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46
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ip -net ns2 ro add default via 10.141.11.1
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47
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48
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ip netns exec nsr1 ./gtp-tunnel add gtp0 v0 1 10.141.10.2 b010::11
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49
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ip netns exec nsr2 ./gtp-tunnel add gtp0 v0 1 10.141.10.2 b010::10
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50
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51
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# for iperf3, adjust TCPMSS
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52
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ip netns exec nsr1 nft -f - <<EOF
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53
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flush ruleset
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54
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55
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table ip x {
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56
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chain forward {
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57
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type filter hook forward priority 0
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58
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tcp flags syn tcp option maxseg size set rt mtu
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59
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counter
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60
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}
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61
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}
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62
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EOF
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63
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64
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# ip netns exec ns2 iperf3 -s
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65
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# ip netns exec ns1 iperf3 -c 192.168.10.2 -n 100G
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