Fix tcp_repair_test that use mapped addresses

There is different between bionic (on-device tests) and glibc
(VM tests) around interpreting IPv4-mapped addresses. Bionic
don't convert mapped addresses into IPv4 addresses.

Bug: 130199266
Test: run_net_test.sh tcp_repair_test.py
Test: m kernel_net_tests && adb push &&
      adb shell /data/nativetest64/kernel_net_tests/kernel_net_tests

Change-Id: I4705464a97c6daec36c69ce72cde58a8bc705929
Merged-In: I2b4c9f111f19dab4cfe29ce16ca130cdff2fba91
(cherry picked from commit f4599d1a1231dfaafe71ece2d7533fb8d8d5d21b)