vyos-1x.git/src/etc/dhcp/dhclient-enter-hooks.d/03-vyos-ipwrapper, branch feature/T9082-codeql-cpp

T8410: Fix typos and mistakes for comments and messages

2026-03-27T15:00:17+00:00

Fix typos and mistakes No functional changes

T8188: Preserve static IPv4 addresses flushed by dhclient

2026-03-19T16:07:08+00:00

When dhclient renews/rebinds a lease, it calls "ip -4 addr flush dev ". This removes ALL IPv4 addresses, including static addresses configured via VyOS (e.g., "set interfaces ethernet eth0 address 192.168.1.1/24"). The updated hook logic now intercepts the "ip -4 addr flush" command and replaces it with a selective flush that only removes addresses marked as "dynamic" by the kernel. DHCP-assigned addresses have the "dynamic" flag set automatically.

T7941: fix DHCP client running in VRF with non-word characters

2025-10-18T11:19:10+00:00

The previous implementation used awk with a regex to extract the VRF name from JSON data, relying on "(\w+)" to match the value. This broke for valid VRF names containing hyphens or other non-word characters. This update replaces the regex-based extraction with a jq query that reliably parses the JSON structure, ensuring correct behavior regardless of VRF name format. This also reduces parsing fragility by using a tool purpose-built for JSON processing.

dhclient: T6667: Added workaround for communication with FRR

2024-08-24T08:06:39+00:00

To increase the chance for dhclient to configure routes in FRR, added a workaround. Now 10 attempts are performed with 1 second delay and only after this dhclient gives up.

T4405: Fix administrative distance of DHCP routes

2022-05-10T15:56:01+00:00

- Default dhclient script only uses value of `$IF_MERIC` envvar for default route recived via `router` option. - This variable has no effect on rotes received via `rfc3442-classless-static-routes` option - Considering that Vyos overrrides `ip` command originating from `dhclient` this can be easily fixed in `iptovtysh()` function by using the `$IF_METRIC` envvar directly in the dhclient hook. (cherry picked from commit 0c00e7bf8b6e68814607fde4ff0cd70ce9f4b486)

Revert "dhclient: T3392: remove /usr/sbin prefix from iproute2 ip command"

2022-02-01T07:00:58+00:00

This reverts commit 78b247b724f74bdabab0706aaa7f5b00e5809bc1.

dhclient: T3392: remove /usr/sbin prefix from iproute2 ip command

2022-01-28T21:15:29+00:00

dhclient: T3392: Changed dhclient-script hooks for VRF

2021-04-14T22:37:50+00:00

There were two problems with VRF support inside dhclient-script: - VRF check inside the `01-vyos-cleanup` hook was needless because it will be done inside the `03-vyos-ipwrapper` anyway; - VRF was ignored for in-kernel routes in `03-vyos-ipwrapper`. Theoretically, there must be no situation now when this can leads to a real problem, but better will be to keep both kernel and FRR backends in sync. Also, the way to get and use a VRF name was changed to an easier one.

dhcp: T3392: fix VRF detection

2021-03-08T19:20:00+00:00

dhcp: T3300: add DHCP default route distance

2021-02-15T15:30:00+00:00