Feif Un –
“Anumber of years ago, while I was in yeshiva, there was a letter printed against the eruv, stating that using it is chilul Shabbos d’Oraysa. It was signed by R’ Pam zt”l, R’ Dovid Cohen, R’ Aharon Schechter, R’ Shmuel Berenbaum, and others.”
The only posek on this list, Rav Dovid Cohen is not opposed to an eruv.