Cleanup background

doc/refs/refs.bib

@@ -133,6 +133,14 @@
   title =     {High speed NAT64 in P4 (git repository)},
   howpublished = {\url{https://gitlab.ethz.ch/nsg/student-projects/ma-2019-19_high_speed_nat64_with_p4}}}
 
+
+
+@Misc{nico18:_implem_layer_ipv4_ipv6_rever_proxy,
+  author =    {Nico Schottelius and Sarah Plocher},
+  title =     {Implementation of a Layer 7 IPv4 to IPv6 Reverse Proxy},
+  howpublished = {Protected git repositry \url{https://gitlab.ethz.ch/nicosc/sdn-nat64/}, part of the Advanced topics in communication networks course fall 2019, \url{https://adv-net.ethz.ch/}},
+  year =      2018}
+
 @Misc{schottelius:_exter_p4_netpf,
   author =    {Nico Schottelius},
   title =     {Extern for checksum'ing payload (P4-NetPFGA-public)},
@@ -149,3 +157,9 @@
   title =     {Jumbo frame},
   howpublished = {\url{https://en.wikipedia.org/wiki/Jumbo_frame}},
   note =      {Requested on 2019-08-15}}
+
+@Misc{huston:_ipv4_addres_repor,
+  author =    {Geoff Huston},
+  title =     {IPv4 Address Report},
+  howpublished = {\url{https://ipv4.potaroo.net/}},
+  note =      {Requested on 2019-08-18}}