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# Copyright (c) Tailscale Inc & AUTHORS
# SPDX-License-Identifier: BSD-3-Clause
FROM alpine:3.22
RUN apk add --no-cache ca-certificates iptables iptables-legacy iproute2 ip6tables iputils
# Alpine 3.19 replaced legacy iptables with nftables based implementation. We
# can't be certain that all hosts that run Tailscale containers currently
# suppport nftables, so link back to legacy for backwards compatibility reasons.
# TODO(irbekrm): add some way how to determine if we still run on nodes that
# don't support nftables, so that we can eventually remove these symlinks.
RUN ln -s /sbin/iptables-legacy /sbin/iptables
RUN ln -s /sbin/ip6tables-legacy /sbin/ip6tables
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