Change in docker-playground[master]: ttcn3-ggsn-test: Use IPv6 address of the tester as "DNS1"

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laforge gerrit-no-reply at lists.osmocom.org
Sun Aug 16 12:55:22 UTC 2020


laforge has submitted this change. ( https://gerrit.osmocom.org/c/docker-playground/+/19672 )

Change subject: ttcn3-ggsn-test: Use IPv6 address of the tester as "DNS1"
......................................................................

ttcn3-ggsn-test: Use IPv6 address of the tester as "DNS1"

We cannot rely on every test slave always having proper IPv6
conenctivity to a public DNS server, and that DNS server to respond
to ICMPv6 echo request.  We're testing half of the internet instead
of our GGSN.  Let's use the IPv6 address of the docker container
running the test sute, which is guaranteed to always exist.  We have
no problems with routing, as the ICMPv6 is hand-crafted and encapsulated
into GTP before it's sent to the kernel IP stack - so basically on the
transmit side, the kernel doesn't know anything about the destination
address of the encapsulated IPv6 packet.

Closes: OS#4713
Change-Id: I1377ffa2cc6980168297d5ff5c81fa5dad94d7a9
---
M ttcn3-ggsn-test/GGSN_Tests.cfg
M ttcn3-ggsn-test/osmo-ggsn.cfg
2 files changed, 3 insertions(+), 2 deletions(-)

Approvals:
  laforge: Looks good to me, approved; Verified



diff --git a/ttcn3-ggsn-test/GGSN_Tests.cfg b/ttcn3-ggsn-test/GGSN_Tests.cfg
index 064bf37..36603c8 100644
--- a/ttcn3-ggsn-test/GGSN_Tests.cfg
+++ b/ttcn3-ggsn-test/GGSN_Tests.cfg
@@ -17,6 +17,7 @@
 GGSN_Tests.m_ggsn_ip_gtpu := "172.18.3.201"
 # GGSN announced DNS address
 GGSN_Tests.m_ggsn_ip4_dns1 := "172.18.3.201"
+GGSN_Tests.m_ggsn_ip6_dns1 := "fd02:db8:3::201"
 
 [EXECUTE]
 GGSN_Tests.control
diff --git a/ttcn3-ggsn-test/osmo-ggsn.cfg b/ttcn3-ggsn-test/osmo-ggsn.cfg
index 7dff25f..972ee93 100644
--- a/ttcn3-ggsn-test/osmo-ggsn.cfg
+++ b/ttcn3-ggsn-test/osmo-ggsn.cfg
@@ -58,7 +58,7 @@
   tun-device tun6
   type-support v6
   ipv6 prefix dynamic 2001:780:44:2000:0:0:0:0/56
-  ipv6 dns 0 2001:4860:4860::8888
+  ipv6 dns 0 fd02:db8:3::201
   ipv6 dns 1 2001:4860:4860::8844
   ipv6 ifconfig 2001:780:44:2000:0:0:0:0/56
   no shutdown
@@ -71,7 +71,7 @@
   ip dns 1 8.8.8.8
   ip ifconfig 176.16.46.0/24
   ipv6 prefix dynamic 2001:780:44:2100:0:0:0:0/56
-  ipv6 dns 0 2001:4860:4860::8888
+  ipv6 dns 0 fd02:db8:3::201
   ipv6 dns 1 2001:4860:4860::8844
   ipv6 ifconfig 2001:780:44:2100:0:0:0:0/56
   no shutdown

-- 
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Gerrit-Project: docker-playground
Gerrit-Branch: master
Gerrit-Change-Id: I1377ffa2cc6980168297d5ff5c81fa5dad94d7a9
Gerrit-Change-Number: 19672
Gerrit-PatchSet: 2
Gerrit-Owner: laforge <laforge at osmocom.org>
Gerrit-Reviewer: laforge <laforge at osmocom.org>
Gerrit-MessageType: merged
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