Allow egress-router to connect to its own node IP, for DNS, etc#19885
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[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: danwinship, knobunc, pravisankar The full list of commands accepted by this bot can be found here. The pull request process is described here DetailsNeeds approval from an approver in each of these files:
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Jun 25, 2018
openshift#19885 allows egress routers to connect to the node IP but when openshift node is configured to use service network IP as DNS IP then egress router pod will not be able to resolve DNS requests. This change will address this issue.
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Jun 25, 2018
openshift#19885 allows egress routers to connect to the node IP but when openshift node is configured to use service network IP as DNS IP then egress router pod will not be able to resolve DNS requests. This change will address this issue.
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Jun 25, 2018
openshift#19885 allows egress routers to connect to the node IP but when openshift node is configured to use service network IP as DNS IP then egress router pod will not be able to resolve DNS requests. This change will address this issue.
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Jun 26, 2018
openshift#19885 allows egress routers to connect to the node IP but when openshift node is configured to use service network IP as DNS IP then egress router pod will not be able to resolve DNS requests. This change will address this issue.
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openshift/origin#19885 allows egress routers to connect to the node IP but when openshift node is configured to use service network IP as DNS IP then egress router pod will not be able to resolve DNS requests. This change will address this issue.
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Egress routers can't currently connect to their own node, because they try to do it via the macvlan, and macvlans are never able to reach their parent interface, regardless of configuration options. This fixes it so that egress-router-to-node-IP traffic gets routed via the SDN instead. This also requires a fix to the egress-router iptables NAT rules, which were being overzealous before.
Fixes https://bugzilla.redhat.com/show_bug.cgi?id=1552738