According to http://www.laparola.net/greco/index.php:
οἷς οὐδὲ] p46 א A B C D1 F G K L P Ψ 075 0150 6 33 81 88 104 181 256 263 326 330 365 424 436 451 459 614 629 630 1175 1241 1319 1573 1739 1852 1877 1881 1912 1962 1984 1985 2127 2200 2464 2492 2495 Byz Lect itar itdem itf itg ito itx itz vg syrh syrpal copsa copbo goth arm (eth) geo slav Basil (Ps-Ignatius) Epiphanius Chrysostom Jerome Theodorelat Augustine Euthalius Ps-Jerome Theodoret Cassiodorus John-Damascus ς WH
οἷς] D2 Greek and Latin mss according to Jerome mss according to Primasius mss according to Sedulius-Scotus
οὐδὲ] syrp Marcionaccording to Tertullian Ephraem Ambrose Latin mss according to Victorinus-Rome Greek mss according to Ambrosiaster
omit] D* itb itd ite Irenaeuslat (Tertullian) Ambrosiaster Victorinus-Rome Pelagius Primasius Greek and Latin mss according to Victorinus-Rome Latin mss according to Cassiodorus Latin mss according to Claudius
omit οἷς οὐδὲ... ὑποταγῇ] l884
οἷς] D2 Greek and Latin mss according to Jerome mss according to Primasius mss according to Sedulius-Scotus
οὐδὲ] syrp Marcionaccording to Tertullian Ephraem Ambrose Latin mss according to Victorinus-Rome Greek mss according to Ambrosiaster
omit] D* itb itd ite Irenaeuslat (Tertullian) Ambrosiaster Victorinus-Rome Pelagius Primasius Greek and Latin mss according to Victorinus-Rome Latin mss according to Cassiodorus Latin mss according to Claudius
omit οἷς οὐδὲ... ὑποταγῇ] l884
οἷς without οὐδὲ appears in very few witnesses (all of the them late) compared with οἷς οὐδὲ (notice p46).
About p46, it reads (according to Laparola):
Gal 2:12 for before the coming of certain from James, with the gentiles he was eating, and when he [instead of "they"] came, he was withdrawing and separating himself, fearing those of the circumcision,
p46 allows: Peter could have known about certain from James in Antioch and what he was preaching, either before Peter reached that city or when he got into Antioch, and immediatly changed his way towards gentiles.
Cordially, Bernard